X elliott



2 Sheets-Sheet 1.

(No Model.)

F. 0. ELLIOTT.

STEAM ENGINE.

5X um,... P

Q Vi lm conca (No Model.) v 2 Sheets-Sheet 2.

P. O. ELLIOTT'.

STEAM ENGINE.

No. 346,741. men'wflmg.` s, 1886.

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UNITED lSrrvrns PATENT OFFICE.

FRANKLIN O.- ELLIOT'I, OF SPARKLING CATAVBA SPRINGS, N. C.

STEAM-ENGlNE.

SPECIFICATION forming part of Letters Patent No. 346,741, dated August3, 1886.

Application filed April l, 1886.

To @ZZ whom t may concern:

Be it known that I, FRANKLIN O. ELLIorr, a citizen ofv the UnitedStates, residing at Sparkling Catawba Springs, in the county of Catawbaand State of North Carolina, haveinvented certain new and usefulImprovements in Steam-Engines, of which the following is avspecification, reference being had therein to the accompanying drawings.

This invention relates to certain improvements in rotary steam-engines,and it has for its object to utilize the direct force of the steamInitially and the expansive power of the saine subsequently, in order toeconomize fuel and secure the full effect of the steam, as more fullyhereinafter specified.

The above-mentioned objects I attain by the means illustrated in theaccompanying -drawings, in which- Figure l represents a longitudinalvertical sectional view of an engine constructed according to Inyinvention; Fig. 2, a transverse vertical section taken on the line a; a:of Fig. l; Fig. 3, a similar view taken on the line y y of Fig. l; Fig.4, a transverse section taken on the line c e of Fig. l; Fig. 5, alongitudinal sectional view of the governor; Fig. (5, a detached viewshowing the front of the partition which divides the two cylinders ofthe engine, and Fig. 7 a rear view of the same.

The letter A indicates the cylinders of the engine, which are two innumber, and setlon gitudinally in line with each other, being divided bya partition, I3.

C indicates the heads of the cylinders,whieh are provided with centralstufing-boxcs, D, through which the longitudinalshaftE passes. The saidshaft at one endis journaled in a bearl ing, F, in which it is adaptedto rotate freely.

The other end of said shaft is ilanged and connected by acoupling-box,G, to the iianged end of a stationary pipe, II, in such manner as torotate independently thereof, for the purpose more fully hereinafterdescribed. The forward end of the shaft is bored, as indicated by the'letter I, and has connected to it a governor, Ii, which consists of ashort cylinder, having a central passage divided by means of apartition,L, asindieated in Fig. l of the drawings'. The said cylinderis bored. transverse] y, forming recesses M at opposite sides, in whichare adapted to work the pistons N, mounted upon Serial No. 197,428. (Nomodelj a reciprocating piston rod, I), extending through thestuffing-boxes S at the ends of the recesses before mentioned. TheeXtremities of said pistonrod are slotted, and through the slots extendthe short arms of the anglelevers T, which are fulcrumed to the bracketsU, forming part of lhe governor. The central passage of the governorconnects bya passage, V, with the central passage on the other side ofthe partition, in order to admit steam interinittently to the hollowportion ofthe driving-shaft ofthe engine,and fromthence through the portX in the rotary piston Z to the first cylinder of the engine.

The letter A indicates two ports leading from the steam-passage in thegovernor to the outer ends of the chambers in which thegoverning-pistonstravel, in order to balance the same and enable them tooperate freely.

Above the 'cylinders are located two valvechests, B' C', in which areadapted to slide the ings, with a gradual curve at one side, so astopermit the valves to fall gradually, without any jerking orinterrupted motion. The dividing-pa-rtition between the two cylinders isprovided with a recess, H', in front, from which extends a passage, I',leading into the second cylinder. rlhe piston is so shaped as to coverthe recess at proper portions of its revolution, and open itat otherportions, so as to discharge the exhaust-steam int-o the second cylinderat proper intervals. The pistons at their edges which abut against theinterior of the cylinders are slotted longitudinally, and have locatedin said slots movable packing-plates K', of brass or other similarmetal, which are pressed normally outward, forming a packing for thepistons.

The letter L' indicates the final exhaustpipe, extending from the secondcylinder into the open air; and M', two escape-pipes, provided withsuitable valves extending from the lower portions of the respectivecylinders for IOO the escape of water of condensation from the same.

Between the outer surface of the governorcylinder and one of thegovernor-levers may be located springs N', which will hold the partsnormally, but permit the weights to act to shift the governing-pistonsat proper times to admit the steam intermittently to the cylinders. A

The operation of my invention is as follows: Steam being admittedthrough the inlet-pipe enters the governor, and from thence passes intothe rst cylinder of the engine, causing its piston to rotate. Thegovernor being in the position shown in Figs. 4 and 5, the steam passesinto the recess M and through the port V on its way to the cylinder. Asthe governor rotates,the weighted levers I operate to shift the pistonsN, cutting off the iiow of steam to the engine until the governor hasturned to its first-mentioned position, thus admit ting the steamintermittently to the cylinders.

Having thus described my invention, what I claim, and desire to secureby Letters Patent,

l. The combination, with the eylinders,their pistons, and slidingvalves, ofthe central shaft and governor, the latter having transverserecesses and reciprocating pistons controlled by weighted levers, andsuitable ports opened 3o and closed by said levers, so as tointermittently admit steam to the engine, substantially as specified.

2. The combination, in a rotary engine, of the cylinders locatedlongitudinally in line 3 5 with each other, the central shaft boredlongitudinally at one end, the piston located thereon and having a portfor the admission of steam to themain cylinder, and the governor,whereby steam is intermittently admitted to said cyl- 4o inder,substantially as specified.

3. The combination, in a rotary engine, of the cylinders arrangedlongitudinally in line with each other, of the central shaft and rotarypistons, the reciprocating valves, the 4 5 governor adapted to admitsteam intermittently to the main cylinder, and the dividingpartitionrecessed and provided with suitable ports, whereby the exhaust-steamfrom the main cylinder is passed to the secondary eyl- 5o inder, so asto operate expansively therein, substantially as specified.

In testimony whereof I alx my signature in presence of two witnesses.

' F. O. ELLIOTT.

Vitnesses:

F. L. CLINE, J. C. MARTIN.

